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Title: Long-range two-dimensional superstructure in the superconducting electron-doped cuprate Pr 0.88 LaCe 0.12 CuO 4

Abstract

Utilizing single-crystal synchrotron x-ray scattering, we observe distorted CuO 2 planes in the electron- doped superconductor Pr 1-xLaCe xCuO 4+δ , x =0.12. Resolution-limited rods of scattering are indicative of a long-range two-dimensional 2√2 × 2√2 superstructure in the a-b plane, adhering to planar space-group symmetry p4gm, which is subject to stacking disorder perpendicular to the planes. This superstructure is present only in annealed, superconducting samples, but not in the as-grown, nonsuperconducting samples. These long-range distortions of the CuO 2 planes, which are generally considered to be detrimental to superconductivity, have avoided detection to date due to the challenges of observing and interpreting subtle diffuse-scattering features.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division; National Science Foundation (NSF)
OSTI Identifier:
1391845
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 1; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Campbell, B. J., Rosenkranz, S., Kang, H. J., Stokes, H. T., Chupas, P. J., Komiya, S., Ando, Y., Li, Shiliang, and Dai, Pengcheng. Long-range two-dimensional superstructure in the superconducting electron-doped cuprate Pr0.88LaCe0.12CuO4. United States: N. p., 2015. Web. doi:10.1103/PhysRevB.92.014118.
Campbell, B. J., Rosenkranz, S., Kang, H. J., Stokes, H. T., Chupas, P. J., Komiya, S., Ando, Y., Li, Shiliang, & Dai, Pengcheng. Long-range two-dimensional superstructure in the superconducting electron-doped cuprate Pr0.88LaCe0.12CuO4. United States. doi:10.1103/PhysRevB.92.014118.
Campbell, B. J., Rosenkranz, S., Kang, H. J., Stokes, H. T., Chupas, P. J., Komiya, S., Ando, Y., Li, Shiliang, and Dai, Pengcheng. Wed . "Long-range two-dimensional superstructure in the superconducting electron-doped cuprate Pr0.88LaCe0.12CuO4". United States. doi:10.1103/PhysRevB.92.014118.
@article{osti_1391845,
title = {Long-range two-dimensional superstructure in the superconducting electron-doped cuprate Pr0.88LaCe0.12CuO4},
author = {Campbell, B. J. and Rosenkranz, S. and Kang, H. J. and Stokes, H. T. and Chupas, P. J. and Komiya, S. and Ando, Y. and Li, Shiliang and Dai, Pengcheng},
abstractNote = {Utilizing single-crystal synchrotron x-ray scattering, we observe distorted CuO2 planes in the electron- doped superconductor Pr1-xLaCexCuO4+δ , x =0.12. Resolution-limited rods of scattering are indicative of a long-range two-dimensional 2√2 × 2√2 superstructure in the a-b plane, adhering to planar space-group symmetry p4gm, which is subject to stacking disorder perpendicular to the planes. This superstructure is present only in annealed, superconducting samples, but not in the as-grown, nonsuperconducting samples. These long-range distortions of the CuO2 planes, which are generally considered to be detrimental to superconductivity, have avoided detection to date due to the challenges of observing and interpreting subtle diffuse-scattering features.},
doi = {10.1103/PhysRevB.92.014118},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 1,
volume = 92,
place = {United States},
year = {2015},
month = {7}
}

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